Ralph J. Cicerone is president of the National Academy of Sciences and chair of the National Research Council. His research in atmospheric chemistry, climate change and energy has involved him in shaping science and environmental policy at the highest levels nationally and internationally.

Victor J. Dzau is president of the National Academy of Medicine. He served nearly 10 years as chancellor for health affairs at Duke University and president and CEO for Duke University Health System. Before that, Dzau held influential posts with Harvard Medical School, Brigham and Women's Hospital, and Stanford University. He is an internationally recognized trailblazer in translational research, health innovation, and global health care strategy and delivery.